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      img10on = new Image(); img10on.src = "graphics/ic.tennis.on.jpg";                     
      img11on = new Image(); img11on.src = "graphics/ic.track.on.jpg";                     
      img12on = new Image(); img12on.src = "graphics/ic.volleyball.on.jpg";                                        

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      img11off = new Image(); img11off.src = "graphics/ic.track.jpg";   
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